This supernova candidate was discovered by the 1.04m Schmidt telescope at Xuyi Observatory during the PMO-Tsinghua Transient Survey(PTSS). The transient is located 2'' east and 2” north of the centre of UGC 12914 . The link of the discovery information at:http://www.cneost.org/ptss2/findname.php?ptssname=PTSS-18iiw